P2P内容分发网络怎么创建

import socket
import threading

class Peer:
    def __init__(self, host, port):
        self.host = host
        self.port = port
        self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.socket.bind((self.host, self.port))
        self.socket.listen(5)
        print(f"Peer listening on {self.host}:{self.port}")

    def handle_client(self, client_socket, addr):
        print(f"Accepted connection from {addr}")
        data = client_socket.recv(1024)
        print(f"Received: {data.decode('utf-8')}")
        client_socket.send("ACK!".encode('utf-8'))
        client_socket.close()

    def start(self):
        while True:
            client_socket, addr = self.socket.accept()
            client_handler = threading.Thread(target=self.handle_client, args=(client_socket, addr))
            client_handler.start()

if __name__ == "__main__":
    peer = Peer('localhost', 9999)
    peer.start()